4.6 Article

Novel bimetallic magnetic nanocomposites obtained from waste-sourced bio-based substances as sustainable photocatalysts.

Journal

MATERIALS RESEARCH BULLETIN
Volume 152, Issue -, Pages -

Publisher

PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.materresbull.2022.111846

Keywords

Magnetic nanocomposites; Photocatalysis; Biomass; Hydroxyl radical; Carbamazepine

Funding

  1. European Union [645551]
  2. ANPCyT, Argentina [PICT 2016-0974, PICT 2017-1628]
  3. CONICET

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Magnetic Fe-Cu nanocomposites with photocatalytic properties were prepared using bio-based substances isolated from urban waste as carbon sources. The effects of different conditions on the structure, morphology, and photocatalytic capacity of the nanocomposites were analyzed.
Magnetic Fe-Cu nanocomposites with photocatalytic properties were prepared via the precursor method under different conditions using bio-based substances isolated from urban waste (BBS) as carbon sources. The effects of the amount of organic matter, the target temperature of the pyrolysis treatment (400-800 degrees C), and the replacement of Cu2+ with Ni2+ and Co2+ on the structure, morphology, and photocatalytic capacity of the nanocomposites were analyzed. The capacity of the nanocomposites for the generation of hydroxyl radical under simulated solar irradiation was evaluated via EPR experiments. Carbamazepine (CBZ) photodegradation assays showed an increase of the photocatalytic efficiency of the nanomaterials with decreasing amount of BBS and increasing temperature of the pyrolysis treatment employed in the synthesis. Fe-Cu samples pyrolyzed at 600 and 800 degrees C showed a CBZ degradation larger than 70% after 4 h at pH 3 and 5. Lower photocatalytic efficiencies were obtained for the Fe-Ni and Fe-Co nanocomposites.

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